It circulates online as a short reaction sound rather than as a clip tied to a widely documented film, show or song, so its appeal comes from the line itself and the way creators reuse it. In edits it is typically placed over dull, slow or disappointing moments to suggest the speaker would rather be elsewhere, often alongside other exaggerated reaction sounds like oh my god, wow. Because the joke is self-contained and instantly understood, it keeps working in new videos even without any knowledge of where the voice first came from.